Just had dawes AFR fitted to MY99 car and all I am getting is a flickering red led all of the time, it flickers on tickover and on full boost. I have had the car checked to make sure the fueling is okay and it is perfect, also I have monitored the oxygen sensor and it seems to be switching up to 0.9ish volts, so this seems to be working okay.
Has anyone had this problem before? Any solutions?

yeah me but mine was a faulty lambda!